| 摘要 |
In order to prevent contamination of a non-image part, i.e., to impart surface conditioning effects in lithographic offset printing, an aqueous solution including an inorganic acid such as metaphosphoric acid or a salt thereof is added to printing ink in the present invention. The present invention addresses the problem of providing a printing ink composition whereby the aforementioned inorganic acid or the like exhibits adequate surface conditioning effects, a method for manufacturing the printing ink composition, and a printed article printed using the printing ink composition. A printing ink composition in which at least one species selected from the group consisting of phosphoric acid, an ammonium salt of phosphoric acid, an alkali metal salt of phosphoric acid, an alkaline earth metal dihydrogen salt of phosphoric acid, citric acid, an ammonium salt of citric acid, an alkali metal salt of citric acid, and a magnesium salt of citric acid is added under conditions of not including coarse particles to a lithographic offset printing ink composition containing an extender pigment including at least one species selected from calcium carbonate, magnesium carbonate, and barium sulfate, and the moisture content of the printing ink is reduced. |
